Inkjet recording apparatus, manufacturing method of inkjet head, and checking method of the head

A manufacturing method of an inkjet head, the method comprising:

• a fixing step of fixing an actuator unit comprising a plurality of individual electrodes, a common electrode, a piezoelectric layer interposed between the plurality of individual electrodes and the common electrode, and a plurality of individual lands electrically connected to the respective individual electrodes, to a passage unit in which formed are a plurality of individual ink passages each leading to a nozzle via a pressure chamber, so that the plurality of individual electrodes are opposed to the respective pressure chambers;
• a bonding step of bonding to the actuator unit a flat flexible substrate comprising a plurality of output terminals and a plurality of check terminals, so that the plurality of check terminals are bonded to a bonding face of the actuator unit opposite from a fixing face of the actuator unit fixed to the passage unit, and the plurality of individual lands are bonded to the respective output terminals;
• a measuring step of measuring an electrical characteristic with respect to the plurality of check terminals bonded to the bonding face of the actuator unit;
• and
• a judging step of deciding, on the basis of a measurement result in the measuring step, the number of check terminals having been peeled off from the bonding face of the actuator unit.

A checking method of an inkjet head comprising a passage unit in which formed are a plurality of individual ink passages each leading to a nozzle via a pressure chamber;

• an actuator unit fixed to the passage unit, the actuator unit comprising a plurality of individual electrodes related to the respective pressure chambers, a common electrode, a piezoelectric layer interposed between the plurality of individual electrodes and the common electrode, and a plurality of individual lands positioned on a bonding face of the actuator unit opposite from a fixing face of the actuator unit fixed to the passage unit, the plurality of individual lands being electrically connected to the respective individual electrodes;
• and a flat flexible substrate comprising a plurality of output terminals bonded to the respective individual lands, and a plurality of check terminals bonded to the bonding face of the actuator unit,
• the method comprising:
• a measuring step of measuring an electrical characteristic with respect to the plurality of check terminals;
• and
• a judging step of deciding, on the basis of a measurement result in the measuring step, the number of check terminals having been peeled off from the bonding face of the actuator unit.

An inkjet recording apparatus comprising:

• a passage unit in which formed are a plurality of individual ink passages each leading to a nozzle via a pressure chamber;
• an actuator unit fixed to the passage unit, the actuator unit comprising a plurality of individual electrodes related to the respective pressure chambers, a common electrode, a piezoelectric layer interposed between the plurality of individual electrodes and the common electrode, and a plurality of individual lands positioned on a bonding face of the actuator unit opposite from a fixing face of the actuator unit fixed to the passage unit, the plurality of individual lands being electrically connected to the respective individual electrodes;
• a flat flexible substrate comprising a plurality of output terminals bonded to the respective individual lands, and a plurality of check terminals bonded to the bonding face of the actuator unit;
• a measuring unit which measures an electrical characteristic with respect to the plurality of check terminals;
• and
• a judging unit which decides, on the basis of a measurement result of the measuring unit, the number of check terminals having been peeled off from the bonding face of the actuator unit.